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Microbiology
Norway
2025

D-Index & Metrics

Microbiology

D-Index
74
Citations
22395
World Ranking
1561
National Ranking
3

Research.com Recognitions

  • 2025 - Research.com Microbiology in Norway Leader Award
  • 2022 - Research.com Microbiology in Norway Leader Award

Overview

Ingar Olsen is affiliated with the University of Oslo in Norway and primarily conducts research within the fields of Dentistry and Medicine. Their work has a significant focus on periodontics, physiology, and molecular biology, with additional contributions to neurology and pharmacy.

The scientist's research topics cover various aspects of oral microbiology and periodontitis, salivary gland disorders and functions, and Alzheimer's disease research and treatments. Other notable areas of interest include oral health pathology and treatment, S100 proteins and annexins, dental health and care utilization, as well as oral and gingival health research.

Frequent publication venues include:

  • Den Norske tannlegeforenings tidende
  • Journal of Oral Microbiology
  • Medical Hypotheses
  • Expert Review of Anti-infective Therapy
  • Journal of Alzheimer s Disease Reports

Ingar Olsen has collaborated repeatedly with several coauthors, among them:

  • Lise Lund Håheim
  • Dag S. Thelle
  • Kjersti S. Rønningen
  • Sim K. Singhrao
  • Per E. Schwarze

The scientist's recent publications include:

  • "Is Porphyromonas gingivalis involved in Parkinson's disease?" (2020, European Journal of Clinical Microbiology & Infectious Diseases)
  • "Low levels of salivary lactoferrin may affect oral dysbiosis and contribute to Alzheimer's disease: A hypothesis" (2020, Medical Hypotheses)
  • "Interaction between genetic factors, Porphyromonas gingivalis and microglia to promote Alzheimer's disease" (2020, Journal of Oral Microbiology)
  • "Porphyromonas gingivalis-Induced Neuroinflammation in Alzheimer's Disease" (2021, Frontiers in Neuroscience)
  • "Porphyromonas gingivalis infection may contribute to systemic and intracerebral amyloid-beta: implications for Alzheimer's disease onset" (2020, Expert Review of Anti-infective Therapy)

Best Publications

  • Defining the Normal Bacterial Flora of the Oral Cavity

    Jørn A. Aas;Jørn A. Aas;Bruce J. Paster;Bruce J. Paster;Lauren N. Stokes;Ingar Olsen

  • Systemic Diseases Caused by Oral Infection

    Xiaojing Li;Kristin M. Kolltveit;Leif Tronstad;Ingar Olsen

  • Bacteria of Dental Caries in Primary and Permanent Teeth in Children and Young Adults

    Jørn A. Aas;Jørn A. Aas;Ann L. Griffen;Sara R. Dardis;Alice M. Lee

  • The breadth of bacterial diversity in the human periodontal pocket and other oral sites.

    Bruce J Paster;Ingar Olsen;Jørn A Aas;Floyd E Dewhirst

  • Biofilm-specific antibiotic tolerance and resistance.

    I. Olsen

  • Can oral bacteria affect the microbiome of the gut

    Ingar Olsen;Kazuhisa Yamazaki

  • Microbiota of periapical lesions refractory to endodontic therapy.

    Pia Titterud Sunde;Ingar Olsen;Gilberto J. Debelian;Leif Tronstad

  • Phylogeny of Bacteroides, Prevotella, and Porphyromonas spp. and related bacteria.

    B J Paster;F E Dewhirst;I Olsen;G J Fraser

  • Phylogeny of 54 representative strains of species in the family Pasteurellaceae as determined by comparison of 16S rRNA sequences.

    F E Dewhirst;B J Paster;I Olsen;G J Fraser

  • Bacterial Profiles of Root Caries in Elderly Patients

    Dorita Preza;Ingar Olsen;Jørn A. Aas;Tiril Willumsen

  • Synovial inflammation in active rheumatoid arthritis and psoriatic arthritis facilitates trapping of a variety of oral bacterial DNAs.

    K. Moen;J. G. Brun;M. Valen;L. Skartveit

  • Fluorescence in situ hybridization (FISH) for direct visualization of bacteria in periapical lesions of asymptomatic root-filled teeth

    Pia T. Sunde;Ingar Olsen;Ulf B. Göbel;Dirk Theegarten

  • Genetic Structure of Population of Bacillus cereus and B. thuringiensis Isolates Associated with Periodontitis and Other Human Infections

    Erlendur Helgason;Dominique A. Caugant;Ingar Olsen;Anne-Brit Kolstø

  • Comorbidity of periodontal disease : two sides of the same coin? An introduction for the clinician

    Palle Holmstrup;Christian Damgaard;Christian Damgaard;Ingar Olsen;Björn Klinge

  • Sphingolipids in Bacteria and Fungi

    Ingar Olsen;Erik Jantzen

  • Can oral infection be a risk factor for Alzheimer's disease?

    Ingar Olsen;Simarjit Kaur Singhrao

  • Denture stomatitis. Occurrence and distribution of fungi.

    Ingar Olsen

  • Possible role of Porphyromonas gingivalis in orodigestive cancers.

    Ingar Olsen;Özlem Yilmaz

  • Assessment of periradicular microbiota by DNA-DNA hybridization.

    P. T. Sunde;L. Tronstad;E. R. Eribe;P. O. Lind

  • Porphyromonas gingivalis disturbs host-commensal homeostasis by changing complement function.

    Ingar Olsen;John D. Lambris;George Hajishengallis

  • Evaluation of the Effect of Two Chlorhexidine Preparations on Biofilm Bacteria In Vitro: A Three-Dimensional Quantitative Analysis

    Ya Shen;Wei Qian;Christopher Chung;Ingar Olsen

Frequent Co-Authors

Dominique A. Caugant
Dominique A. Caugant Norwegian Institute of Public Health
Bruce J. Paster
Bruce J. Paster Harvard University
Floyd E. Dewhirst
Floyd E. Dewhirst Harvard University
Haroun N. Shah
Haroun N. Shah Middlesex University
Jan Potempa
Jan Potempa University of Louisville
Fred C. Tenover
Fred C. Tenover University of Dayton
Roland Jonsson
Roland Jonsson University of Bergen
Sigmund S. Socransky
Sigmund S. Socransky Harvard University
Dag S. Thelle
Dag S. Thelle University of Oslo
Per E. Schwarze
Per E. Schwarze Norwegian Institute of Public Health

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